Seed-OSS Chat: pricing, context window and benchmarks
Seed-OSS Chat is a multimodal model from ByteDance. It offers a 65,536-token context window, costs $3.49 per million input tokens and $14.42 per million output tokens, and averages 74.4 across the index's benchmark suite.
Pricing
Seed-OSS Chat costs $3.49 per million input tokens and $14.42 per million output tokens. A blended 3:1 input-to-output mix works out to about $6.22 per million tokens. Cached input is listed at $0.42 per million tokens.
| Item | Price | Notes |
|---|---|---|
| Input | $3.49 | per 1M tokens |
| Output | $14.42 | per 1M tokens |
| Cached input | $0.42 | per 1M tokens |
| Blended 3:1 | $6.22 | estimate per 1M tokens |
| 1M in + 1M out | $17.91 | estimate |
Benchmarks
Scores below are modelled estimates on a 0–100 scale. Use them to compare relative position, not as official vendor results.
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 76.2 | 299 | 50th | |
| GPQA Diamond | 69.7 | 277 | 54th | |
| SWE-bench Verified | 63.9 | 236 | 61th | |
| HumanEval | 79.9 | 237 | 61th | |
| MATH-500 | 75.5 | 314 | 48th | |
| AIME 2025 | 71.0 | 236 | 61th | |
| LiveCodeBench | 63.8 | 325 | 46th | |
| IFEval | 83.6 | 227 | 62th | |
| TruthfulQA | 76.5 | 296 | 51th | |
| HellaSwag | 85.7 | 226 | 62th | |
| MMMU | 72.9 | 225 | 63th | |
| Arena Elo | 1382.4 | 269 | 55th |
What Seed-OSS Chat is good for
Seed-OSS Chat is an open-weight model, so it can be self-hosted or run through a third-party inference provider. That matters for data residency, fine-tuning and long-run cost control. At $3.49 per million input tokens (hosted list price) and a 65,536-token context window, it is a practical option for teams that want more control than a closed API allows.
Strengths
- Input price of $3.49 per million tokens is at or below the index median.
- Open weights make self-hosting, fine-tuning and data-residency review possible.
- Accepts more than text, including image input where the provider supports it.
Trade-offs
- No standout weakness in the indexed specifications, but real-world behaviour still needs testing.
How it compares
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Gemma 3 Chat | Google DeepMind | 65536 | $3.74 | 74.5 |
| Llama 3 Hyperbolic | Hyperbolic | 65536 | $3.86 | 74.5 |
| Llama 3 Novita | Novita AI | 128000 | $3.70 | 74.4 |
| Seed-OSS Chat | ByteDance | 65536 | $3.49 | 74.4 |
| GPT-4.1 Mini | OpenAI | 128000 | $10.43 | 74.3 |
| Nova Lite Reasoning | Amazon | 32768 | $9.92 | 74.3 |
FAQ
How much does Seed-OSS Chat cost?
Seed-OSS Chat is listed at $3.49 per million input tokens and $14.42 per million output tokens. Cached input is $0.42 per million tokens. A blended 3:1 input-to-output mix is about $6.22 per million tokens.
What is the context window of Seed-OSS Chat?
Seed-OSS Chat has a context window of 65,536 tokens and can emit up to 32,768 output tokens per request in this index.
Is Seed-OSS Chat open weights?
Yes. Seed-OSS Chat is listed as an open-weight model under a open weights licence.
How does Seed-OSS Chat score on benchmarks?
Seed-OSS Chat averages 74.4 across the scored benchmarks in this index, ranking #267 of 600 models. Its strongest relative result is Arena Elo at 1382.4.
What is Seed-OSS Chat best for?
Seed-OSS Chat is an open-weight model, so it can be self-hosted or run through a third-party inference provider. That matters for data residency, fine-tuning and long-run cost control. At $3.49 per million input tokens (hosted list price) and a 65,536-token context window, it is a practical option for teams that want more control than a closed API allows.